Summary: ERRATUM FOR COMMUTING ELEMENTS AND SPACES OF
AND F. R. COHEN
Abstract. We correct some cohomology calculations appearing in .
In the preprint , M. Crabb has pointed out that two of the cohomology calculations
in , namely Theorem 1.4 and Theorem 4.12 are not consistent with the results in his
paper. Here we outline how to correct the results in our paper.
Consider the Mayer-Vietoris spectral sequence in integral cohomology associated to the
covering X = X1,2 X1,3 X2,3 where X denotes the noncommuting triples in SU(2)
and the Xi,j correspond to the noncommutativity of the ith and jth coordinates. It
will have as its E1 term
(X1,2, Z) Hq